looper/util.hpp

#pragma once
#include <string>
#include <string.h>
#include <stddef.h>
#include <stdint.h>
#include <cmath>
#include <stdarg.h>
std::string PadZeros(std::string input, size_t required_length);
uint8_t TimeToComponentCount(double time_code);
std::string TimeToString(double time_code, uint8_t min_components = 1);
std::string get_prefs_path();
inline const char *vcformat(const char *format, va_list args) {
    va_list args_copy;
    va_copy(args_copy, args);
    char *buf;
    size_t buflen = 0;
    buflen = vsnprintf(NULL, 0, format, args_copy) + 1;
    va_end(args_copy);
    buf = (char*)malloc(buflen);
    if (buf == NULL) {
        return NULL;
    }
    memset(buf, 0, buflen);
    buflen = vsnprintf(buf, buflen, format, args) + 1;
    return buf;
}
inline const char *cformat(const char *format, ...) {
    va_list args;
    va_start(args, format);
    const char *output = vcformat(format, args);
    va_end(args);
    return output;
}
inline std::string to_string_with_decimals(double value, unsigned decimals) {
    std::string num_text;
    if (value == 0) {
        num_text = "0";
    } else {
        size_t buflen = snprintf(NULL, 0, "%f", value);
        buflen++;
        char *buf = (char*)malloc(buflen);
        memset(buf, 0, buflen);
        snprintf(buf, buflen - 1, "%f", value);
        num_text = std::string(buf);
        free(buf);
    }
    int found = num_text.find(".");
    if (found == -1) {
        found = num_text.size();
        num_text.append(".0");
    }
    if (num_text[0] == '.') {
        num_text = "0" + num_text;
        found++;
    }
    if (decimals == 0) {
        num_text = num_text.substr(0, found);
        return num_text;
    }
    int chars_after_decimal = num_text.size() - found - 1;    
    if (chars_after_decimal > decimals) {
        num_text = num_text.substr(0, found + decimals + 1);
    } else {
        for (int i = chars_after_decimal; i < decimals; i++) {
            num_text.push_back('0');
        }
    }
    return num_text;
}
inline size_t combine_hashes(std::initializer_list<size_t> hashes) {
    std::string values = "^";
    values += hashes.size();
    values += "@";
    for (auto value : values) {
        values += value;
        values += ";";
    }
    return std::hash<std::string>()(values);
}
#define MIN(x, y) ((x < y) ? x : y)
#define MAX(x, y) ((x > y) ? x : y)